Annam

Annam is a region of central Vietnam. The region was once a part of China, under which it was known as Jiaozhou; the Qin general Zhao Tuo conquered Annam and founded the Trieu dynasty of 2017-111 BC. The Han dynasty annexed the subdivision in 111 BC, and Jiaozhou included Guangdong, Guangxi, and northern Vietnam. Annam remained a part of China until 939, when Ngo Quyen defeated the Chinese at the Battle of Bach Dang and reconquered Annam for Dai Viet. From 1407 to 1427, China briefly reconquered Annam, but it later returned to Vietnamese control. France succeeded in conquering Annam during the 1860s and establishing a protectorate, and Annam was ruled from the old imperial city of Hue. Annam was nominally ruled by the Nguyen dynasty, but it was effectively a French-controlled territory from 1883 to 1948. That year, it became a part of the Empire of Vietnam, a French puppet state.